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Even leading up to the big 4-0, Klum was already in a revealing mood with her fans. Over the holidays, she blasted out this shot of herself sunbathing topless, writing, "Island speed." (12/18/2012)

Heidi Klum's Raciest Twitter Photos (So Far)

omg! from Yahoo

For the supermodel, turning 40 has been all about showing her saucy side! The mom of four, who reached the milestone birthday on June 1, has been increasing her Twitter and Instagram followers by showing off her million-dollar body to the masses. Take a look…